Apparatus for shaping hollow bodies.



G. W. BEADLE. APPARATUS FOR SHAPING HOLLOW BODIES.

APPLICATION FILED APR. 8, 1910.

Patented Aug. 6, 1912 2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH $0.. WASHINGTON. Dfc.

APPLICATION FILED APR. 8, 12310.

Patented Aug. 6, 1912.

2 SHEETS-811E171 2.

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GEORGE W. BEADLE, OF EAST ORANGE, NEVI JERSEY, ASSIGNOB TO SINGLE SERVICE PACKAGE CORPORATION OF AMERICA, A CORPORATION OF NEW JERSEY.

APPARATUS FOR SHAPING HOLLOW BODIES.

Specification of Letters Patent.

Patented Aug. 6,1912.

Application filed April 8, 1910. Serial No. 554,173.

To all whom it may concern:

a citizen of the United States, residing at East Orange, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Apparatus for Shaping Hollow Bodies, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to mechanism for shaping hollow bodies, and is designed more particularly for reshaping cylindrical bodies to give them an elongated or oblong form, for use in the production of boxes, receptacles, and the like.

Boxes and receptacles for holding both liquid and dry substances are now made from strips of paper wound to produce a hollow tubular body, and is employed either in cylindrical form with end closures ap-' plied, or it is re-shaped to form an oblongi body.

The mechanism of the present invention is designed with special reference to the reshaping of tubular bodies produced in this manner, and the invention consists in combining with a mandrel adapted to act on the interior of the body to be re-shaped and adapted to be expanded to elongate said body, a cooperating die adapted to act on the exterior of the body and movable toward the mandrel, the said die being formed with a plurality of pressure faces adapted to act at the side and end of the mandrel.

The invention consists also in combination with means adapted to act on the interior of the body and acting to elongateelevation of the parts shown in Fig. 1.. Fig;

4 is a sectional view on the line. a a of Fig. 1. Fig. 5 is a sectional view on the line b.Z of Fig. 1.

Referring to the drawings: My improved mechanism comprises as its essential features a mandrel 1 adapted to act on the interior of the hollow body to elongate the same, and cooperating dies 2 and 3 adapted to act on the exterior of the body, and adapted to tightly press the same on and around the mandrel, which parts are sustained by means of a suitable base-plate 4;.

The mandrel consists of blocks 6 and 7 mounted at their lower ends in guides 8 and 9 in the base-plate in such manner that the blocks may be moved to and from each other, their outward movement away from each other elongating or expanding the mandrel, and their inward movement toward each other contracting the mandrel. The blocks are recessed in their adjacent faces forming a space 10 between them when they are in contracted condition, in which space is situated a pair of rotary arms 10', adapted when rotated to engage the inner adjacent faces of the blocks and acting to spread said blocks apart and in this manner expand the mandrel. These arms are fixed to a vertical shaft or stem 11 mounted at its lower end to" rotate in a bearing in the baseplate, the lower extremity of the stem being extended downwardly through the baseplate and having fixed to it a driving pinion 12, by means of which it may be rotated and the arms caused to move the sections of the mandrel away from each other from the position shown in Fig. 1 to that shown in Fig. 2, the said sections being drawn to gether and returned to their former position by springs 6 connecting the sections together at opposite ends.

The mandrel sections are of such form that when drawn together, the hollow body A to be re-shaped may be passed over and around them; and when the sections are separated, they will act on the interior of the body and elongate the same, in the presentinstance to a rectangular form, as shown in Fig. .2, the two dies 2 and 3 being adapted as the mandrel is thus expanded, to be moved in wardly toward the same, and being so formed as to close aroundthe elongatedbody on its four sides and firmly press it on the mandrel. To elfect this act-ion, the dies comprise each a longitudinal portion forming a pressure face 14 to act on the side of the elongated body on the mandrel, and a laterally extending end abutment forming a pressure face 15 to act on the end of the body of the mandrel, the ends of the longitudinal portion and abutment of one die being adapted to meet the ends of the abutment and longitudinal portion of the opposing die when the two dies are contracted on the mandrel, and acting in this manner to completely inclo'se the elongated article, as shown in Fig. 2.

The two dies are mounted on the baseplate to move to and from each other in a line oblique to the movement of the mandrel sections, so that the dies will approach the separating sections of the mandrel diagonally. To effect this result, the base-plate is provided on opposite sides of the mandrel with diagonal guide grooves 16 and 17, in which flanges 18 and 19 on the lower ends of the dies are slidingly mounted, springs 20 and 21 being connected with the dies and with the base-plate and acting to normally hold the dies retracted in an open position, as shown in Fig. 1. The dies are moved inwardly toward each other by means of rotary cam arms 22 and 23 projecting in opposite directions from vertical shafts 24 and 25 located at the outer sides of the dies respectively, and mounted near their lower ends in bearings in the base-plate, the lower extremities of the shafts below the baseplate being provided with driving gears 26 and 27 in mesh with the central driving pinion 12, before alluded to. The cam arms at their ends are rounded on opposite sides, as shown at 28, and these rounded ends are adapted, when the shafts are rotated, to engage shoulders 29 on the outer sides of the dies and force the dies inwardly in their guides toward the mandrel. There are two sets of cam arms for each die, in position to engage near the upper and lower ends respectively of the dies, in order that the latter may be moved uniformly and evenly in their guides.

It will be seen from the construction described that when the cam arms are rotated in the direction indicated by the arrows in Fig. 1, the curved ends of the arms will successively engage the shoulders on the dies, causing the said dies to move inwardly toward each other intermittently, the springs 20 and 21, before alluded to, acting between each inward movement of the dies, to draw the dies outwardly and separate them.

By gearing the pinions on the lower ends of the shafts 24 and 25, with the central pinion 12, all of the shafts will be operated in unison, with the result that the mandrel and the dies will be correspondingly operated, the relation of the mandrel operating arms to the cam arms for the dies being such that the dies will be contracted simultaneously with the expansion of the mandrel.

Motion may be imparted to the mechanism in any suitable manner and from any suitable source, a mutilated driving pinion 30 being shown in the present instance engaging the pinion 12 and acting by its continuous rotation in one direction to operate the mandrel and dies in such manner that there will be a pause between the open ing and closing movements of the dies.

- In the operation of the mechanism, the parts of the mandrel being drawn together as shown in Fig. 1, and the dies beingretracted, the hollow body to be re-shaped is placed over the mandrel. Motion is then communicated to the parts by means of the two die operating cams will be rotated in the same .direction, as indicated by the arrows in Fig. 1, and the mandrel operating arm will be rotated in the opposite direction. The curved ends of the cam arms engaging the shoulders on the dies, will force the latter inwardly toward each other, simultaneously with which the. mandrel. operating arm will engage at its opposite will spread the same apart. As the parts of the mandrel separate, they will engage the interior of the body A and elongate the same, the dies, as this elongation is taking tudinal portions acting at the. sides of the mandrel, and the end abutments acting at the ends of the mandrel, so that when the outward movement of the mandrel sections completed, the latter will completely embrace the elongated mandrel on its four sides and will firmly compress the body on the mandrel throughout its extent. This comof the parts continues, the mandrel sections are released by their operating arms, and the dies are likewise released, and the several springs will act to quickly draw the parts of the mandrel together, and the dies apart, thereby releasing the shaped body, which may be removed from the machine. Another body to be re-shaped is then placed over the contracted mandrel, and the foregoing operations repeated.

It will be observed that the dies with their angularly related pressure faces formed by their main longitudinal portions and their laterally extending end portions,

tion oblique to that of the expanding movement. As a result of this arrangement, the dies will act to prevent the body, as it takes its elongated form under the action of the mandrel, from buckling or folding between the parts and will apply pressure to both the sides and ends of theelongated body on the mandrel. n

It will be understood'that other means t operating the'mandrel and dies may be emancLt-he inward movement of the dies are pletes the re-shaping action. As the motion approach the expanding mandrel in a directhan the specific device .here shown .for

driving gear 30, with the result that'the ends the two sections of the mandrel, and.

)lace closin inwardl their main lon iployed without departing from the limits of my invention, the only requirement in this respect being that the parts of the mandrel shall be separated to effect the elongation of the body and the dies shall be moved inwardly toward each other to cooperate with the mandrel in shaping and compressing the body. Further, it will be understood that the invention is not limited to the shaping or re-shaping of tubular paper bodies, or bodies formed from strips, but is applicable as well for the shaping of other hollow bodies, provided the operation of the parts is substantially as indicated above.

Having thus described my invention, what I claim is I 1. In an apparatus for re-shaping tubular bodies, the combination of an expansible mandrel constructed to engage with and distend the tubular body at a plurality of points; means to expand said mandrel and distend the tubular body; dies adapted to simultaneously press inwardly on the exterior of the body intermediate the distended portions; and means for moving said dies in the plane of movement of the mandrel, sub stantially as described.

2. In an apparatus for re-shaping tubular bodies, the combination of an expansible mandrel comprising oppositely reciprocable members constructed to engage with the interior of the tubular body along a plurality of parallel lines and distend the same; means to expand said mandrel to distend the body; and dies adapted to simultaneously press inwardly the body portions intermediate the distended portions, each of said dies comprising angularly related pressure faces cooperable with the end of one mandrel member and a continuous side of both mandrel members, substantially as described.

3. In an apparatus for re-shaping tubular bodies, the combination of an expansible mandrel comprising oppositely reciprocable members constructed to engage with the interior of the tubular body along a plurality of parallel lines and distend the same; a rotatable member journaled intermediate the mandrel members and adapted to actuate the same; dies comprising a pair of oppositely reciprocable members having angularly related pressure faces adapted to press inwardly and against the mandrel the portions of the tube intermediate the distended portions thereof; and rotatable cams adapted to actuate said dies, substantially as described.

4. In an apparatus for re-shaping tubular bodies, the combination of means adapted to engage with the interior of said body and distend the same along a plurality of parallel lines; and a die movable in adirection oblique to that of the expanding movement adapted to engage with the exterior of the tubular body intermediate the distended portions and press said intermediate portions against said means, substantially as described.

In testimony whereof I have aflixed my signature in presence of two witnesses.

GEORGE W. BEADLE.

Witnesses:

L. E. MORRISON, W. R. KENNEDY.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

